Electronic telephone switching system



Oct. 4, 1960 w. A. BUDLONG ETAL 2,955,165

ELECTRONIC TELEPHONE swITcHING SYSTEM 53 Sheets-Sheet 1 Filed Oct. 7. 1957 n. A. BUDLONG /NVENTORSI G G DREW By J.A. HARR ATTORNEY Oct. 4, 1960 w. A. BUDLONG ET AL ELECTRONIC TELEPHONE SWITCHING SYSTEM 55 Sheets-Sheet 2 Filed OCT.. 7, 1957 W A. BUDL ONG /NVE NTORS: G. G. DREW By J. A. HARR ATTORNEY Oct. 4, 1960 w. A. BUDLONG ETAL 2,955,165

ELECTRONIC TELEPHONE SWITCHING SYSTEM 55 Sheets-Sheet 3 Filed Oct. 7, 1957 W. A. BUDL ONG Oct. 4, 1960 w. A. BuDLoNG Er'AL ELECTRONIC TELEPHONE' SWITCHING SYSTEM 53 Sheets-Sheet 4 Filed Oct. 7, 1957 A TTORNEV Oct. 4, 1960 w. A. BUDLONG ETAL 2,955,165

ELECTRONIC TELEPHONE swITcHING SYSTEM 53 Sheets-Sheet 5 Filed Oct. 7. 1957 GYM.

GMM.

655mm ESE s am. NNW

Num.

QR. N R.

w. A. BUDLONG ETAL 2,955,165

ELECTRONIC TELEPHONE: swITcHING SYSTEM Oct. 4,

5s sheets-'sheet e Filed Oct. 7, 1957 w. A. uoL ons /NvE/vronsf y E M DHJT m ad. s .TH ri Vl B Q s Oct. 4, 1960 w. A. BUDLONG Erm. 2,955,165

ELECTRONIC TELEPHONE swITcEING SYSTEM 53 Sheets-Sheet 7 Filed Oct. 7, 1957 Qn." KS

ON mdk QON i A. BUDL ONG A T TOR/VFY Oct. 4, 1960 w. A. BUDLONG r-.TAL 2,955,165

ELECTRONIC TELEPHONE swITcHING SYSTEM 53 Sheets-Sheet 8 Filed Oct. 7; 1957 W. A. BUDL ONG n MMM M O Munn @.A. A SLU my MB M w. m @s Oct. 4, 1960 w. A. BuDLoNG r-:rAL 2,955,165

ELECTRONIC TELEPHONE swI'rcHmG SYSTEM Filed Oct. 7, 1957 53 Sheets-Sheet 9 was bb IK A. BUDLONG INVENTORS: G. G. DREW By J. HARP 444s ATTORNEY w. A. BUDLONG ETAL 2,955,165 ELECTRONIC TELEPHONE SW'ITCHXNG ASYSTEM oct. 4, 1960 53 Sheets-Sheet 10 Filed Oct. 7, 1957 WNS O e o QQ n SS A TTORNEV Oct. 4, 1960 w. A. BuDLoNG ETAL 2,955,165

ELECTRONIC TELEPHONE swr'rcHINc SYSTEM 53 Sheets-Sheet 11 Filed Oct. 7, 1957 khbfbbk WWMMU Y gx @nu Oct. 4, 1960 w. A. BUDLQNG ETAL 2,955,165 ELECTRONIC TELEPHONE swITcHING SYSTEM Filed oct. 7, 1957 53 sheets-sheet 1s wko/Auron ccr F IG. /3

/sr smGE No STAGE L/N/r ma srAGE ,30, /303 /305 l m4. [307 1306 l' ATTORNEY Oct. 4, 1960 w. A. BUDLONG ETAL 2,955,165

ELECTRONIC TELEPHONE SWITCHING SYSTEM 55 Sheets-Sheet 15 Filed Oct. '7, 1957 W. A. BUDLONG V E R mmnm M HRM m 6.. m aJ. W ev v. n s m m m Q Q Oct. 4, 1960 w. A. BUDLoNG er1-AL 2,955,165

ELECTRONIC TELEPHONE swITcHING SYSTEM 53 Sheets-Sheet 16 Filed Oct. 7, 1957 W. A. BUD/.ONG

/NVENTOR$' 6.6.DREW

AJ/ARR BV MMM ATTORNEY Oct. 4, 1960 w. A. BUDLONG ETAL 2,955,165

ELECTRONIC TELEPHONE sw-ITCHING SYSTEM Filed Oct. 7, 1957 53 Sheets-She'et 18- TRANS/ AT/ON FROM T3 NUMBER T0 D/'STR/BUT/ON NETWORK ADD/9555 F/G, /3 TRANSLATION FROM T3 Nuu'ER To TRU/vx s/GNAL//vc sELEcroR AooREss o/REcToRr ro EQ NUMBER TRANSLAr/o/v TJ .SPARE M 32 ORDER al AREA coMPREss/o/v TRANsLAr/o/v oRoER AREA MABUDLONG INVENTORS.' G. 6. DREW By AJ/ARR ATTORNEY Oct. 4, 1960 w. A. BUDLONG ETAL 2,955,165

ELECTRONIC TELEPHONE swITcHING SYSTEM Filed oct. 7, 1957 5s sheets-sheet 19 LINES /N TALK/N6 COND/T/ON ,457 PULSE of' usr alc/T I R l HIIIIJIIHIIIlmlllllllmlllllllll llllllf I4 \|5 le SECOND D/G/T CALLED LINE I ATTORNEY Oct. 4, 1960 W. A. BUDLONG EIAL ELECTRONIC TELEPHONE SWITCHING SYSTEM (S 0, :O LINE IDLE 0R LI EING SERVED BY COMMON CONTROL) 53 Sheets-Sheet 20 READ-LI (SUPERVISORY SCAN 0F READ-S SUBSCR IBERS LINE 0925) (S-I, I=I LINE IN TALKING CoND ITIDN 0R DENIED SERvICE) NATCN NISNATCN ARRBLE o (S I LI=o DR ICINATIoN DR TRANS x D 'SCONNECTI (TICIDN IN A LINE OTHERWISE SERVED DY READ-L2 TRANSFER To D CONNECT l m cc) LI L2 LINE CONDITION SEQUENCE (La o o o IDLE ORIGINATION) o I LINE SERVED BY cc ADVANCE To (IIUNT FDR I o TALKING supeg IgAN DE gf'* 'G- I I DEN IED SERVICE SUBSCR IBERS LINES READ O A, ,ST REG AI =I A I A2 oR IC. REC. coND.

o o REC. IDLE o-A I=o I (REG, P05- l BUSY-NOT READY ADVANCE TD SURERvI- S IBLT IDLE) f FDR D IAL PULSES INC SUBSCR IBERS LINES READ-o-A2 I I DIAL PULSES (A2.I 4REC. BUSY) Aa-o (REGISTER IDLE) CHECK SUCCEED ING REGISTERS UNTIL AN IDLE OR IG. REG.

IS FOUND WR ITE I-O-A2 (SE IZE OR IGINATING REGISTER) I WR ITE IL2 (SET L INE T0 THE "SERVED WR ITE-OLE BY COMMON CONTROL" CODE) NUMBER IN ORIG. REG. (ASS IGNS REGIS- TER TO A PARTICULAR CALLING LINE) I2 B IT YADDRESS (RESET OR IG. REGISTER) WR ITE I O-LL (RECORD LAST READ STATE 0I:`

CALL ING LINE) WR ITE I O-DT (ESTABLISH D IAL TONE CONNECTION) W. A. BUDLONG /NI/.NTORS' 6.6.DREW By J.A. HARR ATTORNEY 

